8.3. Color Temperature

8.3.1. Overview

Figuur 16.142. Example for the “Color Temperature” filter

Original image, with color temperature estimated at 5,000K

Modified image, with color temperature changed to 6,500K

The Color Temperature filter allows adjusting color temperature of the
light source in an image in Kelvin. It can be used to correct the bluish
cast in overcast photos, or even (to some extent) the red cast in photos
taken under incandescent light with the camera set to daylight.

8.3.2. Activate the filter

You can find this command through
Colors → Color Temperature….

8.3.3. Options

Figuur 16.143. “Color Temperature” options

Original temperature

This is the estimated original color temperature of the light
source in Kelvin. You can change it because the image doesn't
necessarily encode that information correctly or at all
(and you might or might not have measured it). In addition there's
often a mix of light sources (a window, a fill-in flash, a pile of
burning organic fair-trade bamboo wood harvested under a full
moon)... But above all else you can get interesting creative
effects by changing it

Intended temperature

This is the desired color temperature of the light source in
Kelvin.

Both original temperature and intended temperature can be set via
presets. To access presets menu, click a button with a triangle icon
to the right from either of the two options.